In a circular motion of a particle, the tangential acceleration of the particle is given by a t = 9 m s - 2 . The radius of the circle is 4 m . The particle was initially at rest. Time after which total acceleration of the particle makes an angle of 45 ° with the radial acceleration is

Question

In a circular motion of a particle, the tangential acceleration of the particle is given by a t = 9 m s - 2 . The radius of the circle is 4 m . The particle was initially at rest. Time after which total acceleration of the particle makes an angle of 45 ° with the radial acceleration is, 1 3 s, 2 3 s, 5 3 s, 4 3 s

MARKS App · Accepted Answer

At 45 ° , a t = a r = 9 v 2 r = v 2 4 = 9 v = 6 m s - 1 6 = 0 + 9 t t = 2 3 s .

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